Machine for calculating.



B. T. OBRIEN & W. H. BROWNING.

MACHINE FOR CALCULATING. APPLICATION FILED JAN. 31, 1905.

975,634. Patented Nov. 15, 1910.

12 SHEETS-SHEET 1.

6 I l y WITNESSES. s 4 INVENTORS.

B. T. O'BRIEN & W. H. BROWNING.

MACHINE FOR GALGULATING. APPLIGATION FILED JAILBI, 1905.

975,634. Patented Nov. 15, 1910.

12 SHEETS-SHEET 2.

WITNESSES. INVENTORS.

X wmw WM B. T. OBRIEN & W. H. BROWNING.

MACHINE FOR CALCULATING.

APPLIGATION FILED JAN. 31, 1905. 975, 34, Patented Nov. 15, 1910.

' 12 SHEETS-SHEET 3.

INVENTORS.

WITN ESSES.

B. T. O'BRIEN & W. H. BROWNING.

MAOHINE FOR CALCULATING.

APPLICATION FILED JAN. 31, 1905.

Patented NOV. 15, 1910.

12 SHEETS SHEET 4.

B. T. OBRIEN & W. H. BROWNING.

MACHINE FOR OALGULATING. IAPPLIOATION FILED 1.01.9.1. 1905.

Patented Nov. 15, 1910.

12 snnn'rs-snnm a.

INVENTORS WITNESSES. WW1 v M B. T. 0BRIEN-& W. BROWl iING.

MACHINE FOR CALCULATING.

APPLICATION FILED JAN, 31, 1905.

Patented No.15, 1910.

12 SHEE'IB-SHEET 6.

-| NVENTORS.

WITNESSES.

B. T. OBRIEN & W. H. BROWNING.

MACHINE FOR CALCULATING. APPLICATION FILED JAN. '31, 1905.

Patented Nov. 15, 1910.

12 SHEETS-SHEET 7.

1,.. WITNESSES. x W66 INVENTORS.

Fi i 5 73.4

0.. wasnmanm. n. c.

B. T. O'BRIEN & W. H. BROWNING.

MACHINE FOR CALCULATING. APPLICATION FILED JAN. a1, 1905.

Patented Nov. 15, 1910.

12 SHEETS-SHEET 8- (vgTNEssEs.

a HHHH .1

co-. WASHINGTON, 04 c.

B. T. O'BRIEN & W. H. BROWNING.

MACHINE FOR CALCULATING.

APPLICATION FILED JAN. 31 1905 Patented Nov. 15, 1910.

12 SHEETS-SHEET 9.

Q m w Q ...Q Q M m m J./. 3 w Q Q Q .Q Q Q Q .Q w w w Q Q w 3 4 5 Q\DWITN sszs.

' B. T. OBRIEN & W. H. BROWNING.

MACHINE FOR GALGULATING.

APPLIOATION FILED JAN. 31, 1905.

Patented Nov. 15, 1910.

12 SHEETS-SHEET 10.

'6 WITN ESSES. 5152 INVENTORS.

B. T. O'BRIEN & W. H. BROWNING.

MACHINE FOR CALCULATING. APPLICATION FILED JAN. 31,1905.

975,634. Patented Nov. 15, 1 910.

12 SHEETS-SHEET 11.

4 6 5 j y do F/ G.27.

WITNESSES. Y INVfZNTORS ms "ORR-i "ETERS co., WASHINGTON, n c.

B. T. OBRIEN & W. H. BROWNING. MACHINE FOR CALCULATING.

APPLICATION FILED JAN: 31, 1905.

12 SHEET8-SHEET 12.

THE mamas PETERS cm, wasumsrnu. n. c.

Patented Nov. 15, 1910.

UNITED STATES PATENT OFFICE.

BENJAMIN THOMPSON OBRIEN AND WALTER HENRY BROWNING, OF LIVERPOOL,ENGLAND; SAID BROWNING ASSIGNOR TO SAID OBRIEN.

MACHINE FOB, CALCULATING.

Application filed January 31, 1905.

T 0 all whom "it may concern:

Be it known that we, BENJAMIN THOMP SON OBRIEN and l/VALTER HENRY BROWN-me, British subjects, and residents both of Liverpool, in the county ofLancaster, Eng land, have invented certain new and useful Improvementsin lllachines for Calculating, of which the following is aspecification.

This invention relates to improvements in apparatus for adding orcounting without the use of rotating wheels, and may be employed inconjunction with a cash drawer or otherwise as a cash registeringapparatus or it may be employed simply as an adding machine either withor without registering or recording apparatus.

It will be fully described with reference to the accompanying drawings.

Figure 1. side elevation partly in section of machine applied as a cashregister showing keys and levers. Fig. 2. side elevation partly insection of parts beyond showing drawer mechanism printing device andbell. Fig. 3. sectional plan of levers and counting mechanism takenthrough line a0a Figs. 1 and 2 of first bank or pence row of keys. Fig.4. plan of cash drawer. Fig. 5. sectional elevation of cash drawer. Fig.6. perspective view showing one key and corresponding set of levers.Fig. 7. front elevation of counting plates. Fig. 8. front elevation oflifting crossheads. Fig. 9. plan of ends of levers carrying type ribbonand paper feed on line g Figs. 1 and 2. Fig. 10. front elevation ofindicators showing connection with drawer mechanism also lifting racksand locking connections. Fig. 11. sectional plan showing indicatorslocked on line 22 Fig. 10. Fig. 12. sectional plan showing indicatorsunlocked. Fig. 13. sectional plan of indicator through centers. Fig. 14.side elevation enlarged of one set of counting plates. Fig. 15. frontelevation of counting plates showing half-pence pence and shillingplates. Fig. 16. plan in detail of counting mechanism showing one boltset for carrying on. Fig. 17. side elevation in detail of sliding boltlocking lever for-same andpush lever. Fig. 18. side elevation of slidingbolt showing locking lever taken up by means of counting plate. Bolt ishere shown as pushed back by meansof the counting plate engaging withpush lever. Cross-head of next denomination is shown ready to beSpecification of Letters Patent.

Patented Nov. 15, 1910.

Serial No. 243,580.

raised by cam of sliding bolt. Fig. 19. fixed pin, lever engaging withsecond counting plate. Fig. 20. movable pin lever connected to slidingbolt and moved with same. Fig. 21. front elevation showing keys and balllock and means of unlocking drawer and levers from keys. Fig. 22. sideelevation of sliding rod showing pins engaging lever locks and means ofunlocking lever, and resetting lever. Fig. 23. side elevation of initiallever, sliding rod, bell action and drawer lock. Fig. 24. plan of samepartly in section. Fig. 25. detail section of drawer lock and hookmotion showing drawer partially open. Fig. 26. detail section of drawerlock and hook motion showing drawer nearly closed and drawer lock readyto drop in. F i 27, side elevation of the machine partly in sectionshowing the reverse side to that shown in Fig. 2. Fig. 28. frontelevation partly in section with the front part and keys removed.

The counting is effected by a number of counting plates A and A whichare mounted to slide vertically the plates A being raised a givendistance for each unit and allowed to fall when 10, 12 or other desirednumber of units have been added and the plates A being raised one unitto represent tens, hundreds, pounds or other denominations.

In its simplest form the machine is con structed with sliding plates torepresent tens, hundreds, thousands, and so on or it may with slightmodification or arrangement be constructed so that the plates representpence, shillings, pounds, dollars, marks, francs, or other denominationof money or weights. In whichever form it is constructed the slidingplates are all constructed and operated, in a similar manner so that indescribing the machine it is only necessary to describe the action ofone or two plates the succeeding ones to any extent being merelyreproductions thereof diflering only according to the denomination whichthey are intended to represent, one set is shown detached in Fig. 6.

Each counting plate A is provided with a number of holes a and is raisedby a cross head B, provided with lifting pins 6 which enter the holes aby means of a lever D operated or controlled by a key C of which thereis one for each unit or value in each denomination. The depressing ofthe key position.

liberates the lever D which at its forward end (Z falls down operated bythe action of a weight or spring and the back end d is raised acorresponding distance and elevates the cross head B. The movement ofthe lever D is checked by the cross bar (Z of the lever engaging theshoulder c on the under side of the key.

The counting plates A are mounted to slide vertically or approximatelyvertically in a swinging frame 110 pivoted on a fixed shaft 110 in frontof the frame 111, which is also pivoted on shaft 110 and in the frame111 the cross heads B slide vertically. The operating frame D is pivotedon any stationary part of the framework of the machine and the keys Care pivoted on rods E.

The keys C are placed horizontally across the machine on the rods E andover the rear ends 0 of the keys is placed a rod 0 attached at its endsto two locking levers F also pivoted on the rod E which engage the crossbar (Z of the lever D and hold it in normal On any one of the keys Obeing depressed the rear end a raises the locking levers F and releasesthe lever D to lift the cross head B. The ends of the keys C are eachformed with a shoulder 0 on the under side each at a different lengthfrom the end equivalent to the value of the key so that the cross bar (Zfalls forward adiiferent dis tance according to the value of the keydepressed and correspondingly raises the cross head B and counting plateA a different dis tance. hen one key C is depressed and the lever Dreleased the cross bar (Z falls forward under the one depressed key butover the ends of all the other keys; this action has the effect oflocking all the remaining keys in the same line and preventing thembeing operated as the forward end cannot be depressed while the bar (Zis over the rear end 0. The depressed key cannot be returned to normalposition or operated again until the lever D has been returned to normalposition. To further insure the locking of the keys the well known balllocking action may be employed the balls 23 being set in a slotted tubewith only room between them for one key at the same time.

Between each set of counting plates A A mounted upon part of the framework a sliding bolt 116 is fitted to slide to and fro independently ofthe plate (see Figs. 1 1 to 18).

Each sliding bolt carries pivoted to it a lever 118 with a forwardlyprojecting pin 118 and a pivoted push lever 121 which passes through anotch a in the counting plate A. On a cross shaft 116 of the fixed frameof the sliding bolts a pin lever 117 and a locking lever 119 arepivoted, the latter passing through a notch in the counting plate A.Each cross head B is provided with a lateral projection b which alsorests upon the sliding bolt 116, the upper surface of which is notchedas shown. At or near the upper end of the counting plate A numerals 0 to10 or to 12 are inscribed which are exhibited through an aperture orslot or otherwise to indicate the number or amount that has beenregistered.

The counting plates A and A are in the normal position shown in Fig. 11,before the machine operated and before any key is operated the frame 110is pressed or swung back causing the Zero holes a therein to pass backover the pin Z) of the cross head B. The striking of a key and theoperation of the lever D raises the cross head B and pin 7) theequivalent height and with them the counting plate A. The counting plateA is provided with two lugs a a and the supplementary counting plate Ais placed within these lugs and the bottom lug r1 adjusted to engage theplate IL and lift it when a number of holes equivalent to one hole lessthan the dividing number of such denomination shall have been reached.That is to say in the pence when eleven holes a have been raised and indecimals when nine holes have been raised and so on. The top lug (L2 ofthe plate A. is always adjusted the distance of one hole a above the topof subsidiary plate A.

The slid ng bolt 116 in its normal position is locked by a pin on thelocking lever 119 engaging a notch on the top edge of the sliding bolt116. On the return stroke of the swinging frame 110 the counting plate Ais carried with one of its holes (1 onto the pin of the pivoted lever118 before it leaves the pin of the cross head B and one of the holes ofthe subsidiary plate A is carried onto the pin of the lever 11? and theplates 31 A are held in these relative positions while the cross head Bis permitted to drop back to its zero position. During the operation ofthis movement the end of the push lever 121 passes through the notchinside of the plate A and the lock ng lever 11$) passes-through theother notch in plate A. On the plate A being raised by the pin of thecross head B above 11 or 5) as the case may be the projecting lug a ofthe plate it engages the bottom of the plate A and the two will belifted together. The plate A. previous to being lifted by lug a of theplate A, has, by means of a second notch been moving to and fro over theend of the push lever 121 mounted on the sliding bolt 116. On the plateA being lifted the second notch is carried above the end of the pushlever 121. and therefore when sliding bolt 116 is unlocked, it iscarried forward by the swinging frame 110 to the position shown in Figs.16 and 18. The unlocking of the bolt 116 is effected by the raising ofthe locking lever 119 out of the notch by the plate A. The pin lever11.8 pivoted to sliding bolt 116 will be locked in position,

by the locking lever 119, to receive the counting plate A so long ascounting plate A i shall not come into contact with the bottom of thecounting plate A, but such contact being made (the locking lever 119being taken out of the notch in the sliding bolt 116, and the secondnotch of the plate A being lifted above the end of the push lever 121,)pin lever 118 being attached to the slide bolt 11.6 will be carriedforward along with the bolt 116. Therefore the counting plate A, (whichhas hitherto been received and held in position by the pin lever 118),will be free to fall until stopped by coming in contact with the top endof the counting plate A. On the next return stroke of the swinging framethe subsidiary plate A comes in contact with the end of the push lever12]. and carries the sliding bolt 116 along with the swinging frame 110to the position shown in Figs. 16 and 18. The pin lever 118 will be in aposition for the pin thereon to receive the plate A until the projectinglug a shall raise the plate A, but being pivoted to the sliding bolt 116the pin 118 will. be carried back free of the counting plate A and theplate will be free to fall when it leaves the end of the pin on thecross head B. The plate A then falls until the top projecting lug orests upon the top of the counting plate A. The distance the plate Afalls will be 12 for pence or 10 for decimals.

The projecting lug Z) of any one. cross head B rests upon the adjacentsliding bolt 116 of the denomination lower in value. That is to say thelug Z) of the shillings cross head rests upon the sliding bolt of thepence; or the lug b of the tens denomination rests upon the sliding bolt116 of the units and the hundreds on the tens and so on.

When the sliding bolt 116 is in the locked position shown in Figs. 1,14, 16 and 17 the projecting lug 6 sets the pin 5 of the cross I head Bin its normal or zero position in relation to any of the keys C thathave been depressed. When however the sliding bolt 116 is moved forwardby the plate A into the position shown in Figs. 16 and 18 the inclineddepression 116 therein will permit the projecting lug Z) of the crosshead B of the next higher value to drop or fall to the bottom of thedepression 116 which equal in depth to one hole a of the plate A. Thistherefore, permits the cross head B and pin Z) to drop one hole belowzero and consequently carries up the plate the distance of one holehigher at the next depression of the key thereby carrying one unit onfrom one denomination to the next. On any of the keys C being nowdepressed all the sliding bolts 116 which have been moved forward. arecarried back to normal position by a cross bar 122 attached to theswinging frame 110. As the sliding bolts return to position the inclineddepression or cam 116 raises any of the cross heads which may be belowzero the distance of one of the holes a. This return action oarries thecounting plate A off the pin or le ver 117, the plate drops to its Zeroposition and the locking lever 119 falls again into the notch in thesliding bolt 116.

At zero position of the counting plate A the number of holes a intowhich the cross head pin 6 will enter below the top hole must be onegreater than the value of the highest. key, thus for pence denomination12 holes a are required and for units 10 holes a are required. A similarnumber of holes on the plate A are required to receive the pin of thelever 118 but the holes for the pin 118 may coincide with the holes a orthere may be sufficient extra holes as shown to accommodate both pins.In the supplementary counting plate A there are a similar number ofholes to receive the pin or lever 117. The object of providing one holemore than the value of the highest key is that there shall always be ahole for the pin 6 of the cross head B to enter. For instance if the 9key of the shillings denomination and the 11 key of the pencedenomination be both depressed, (upon a key dividing on 12 forshillings) and the 2 key of the pence denomination be next depressed itwill cause the lug Z) of the cross head of the shillings denomination tofall into the cam recess 116 of the sliding bolt 116 of the pencedenomination and the pin 6 of the cross head B of the shillingsdenomination will next move into the additional hole a of the plate A ofthe shilling denomination. After the counting plate A has been raised 11holes the lug a thereof will be directly under and in contact with theplate A and should any further key say 2, of the same denomination bedepressed the plate A will be lifted an equivalent distance or number ofholes. The 11 key has been depressed, the crosshead B by means of itspin 6 has carried the count ing plate A the distance of 11 holesbringing the projecting lug a of the plate A immediately under and readyto lift the plate A. The swinging frame 110 carries the counting plate Aoff the cross-head pin I) on to the pin 118 of the pin lever 118 l/Vhenthe counting plate A is free from the pin 7) of the crosshead B thecrosshead B is at liberty to follow the resetting of the levers D andresume its zero or normal position. The swinging frame when recedingplaces the 12th hole of the counting plate A on the pin 6 of thecrosshead B. The counting plate A is now in contact, by means of itsprojecting lug a, with the supplementary counting plate A and it will bereadily understood that further motion given to the crosshead B willlift both the counting plates A and A to the value of the key depressed.It is the crosshead B which is lifted by the lever D acted on by thekeys C.

To return all the counting plates A and A to zero after recording thetotals the frame 111 and the cross heads B with it are pushed back by apush lever or link B until all the cross head pins 6 and the plates Aand A are clear of the pins or levers 11S and 117. To prevent the crossheads B falling into the cam recesses 11G when this movement takes placea pin 13 is fixed to the frame over each cross head B which enters ahole If in the cross head and prevents it dropping until the frame 111is returned to normal position.

To read the total of the amount registered at any given time thenumerals on the top of the plates A are spaced the same as the holes aand equivalent to the lift of the levers D and they are exposed throughthe apertures in a plate or cover A attached to the swinging frame 110.The tail members of the levers D are all carried back to zero by aresetting lever D with a bar D resting on the levers D the resettinglever D being operated by a hand lever or in the case of a cash registerby the movement of the cash drawer.

For cash registering the machine is mounted over a cash drawer G asshown in Fig. 2. The drawer G is mounted on runners g. and at one sideof the frame a pawl G is pivoted to hold the drawer closed and at theback of the drawer a lever is pivoted with a spring by which the cashdrawer G is pressed open when the pawl G is r leased. On the side of thedrawer G a tumbling lever is pivoted to engage the lower end (Z of theresetting lever D and cause it to reset the levers D to their first orzero position. The lever 9* is tilted over by a stop against which itstrikes and the end travels down the end (Z of the resetting lever Duntil it reaches the position shown in Fig. 2 and a pawl an engaging ina stationary rack M prevents the return of the resetting lever until thelever M and the pawl m are lifted.

At the back of the machine a lever H is pivoted (see Fig. 3.) one end ofwhich engages a slot 72. in the resetting lever D and the other end isconnected by a link /t to the swinging frame 110 previously described.The operation of the resetting lever D to reset all the levers D alsooperates the swinging frame 110 to remove the counting plates A from thepins Z) of the cross heads B, and place them and the subsidiary plates Aon pins on the levers 11S and 117 into the position shown in Fig. 1%.The reverse movement of the resetting lever D when released by the leverM raising the pawl m removes the plates A and A. from the pins or levers118 and 11'? and places the plates A onto the pins Z) of the cross headB. The

pawl G which engages the side of and locks the drawer G is provided withlag or pin g.

it one side of the machine and at the side of the drawer G andv pawl Gthree vertically sliding or lifting rods K, M and N are I placed, (seeFigs. 21 to 26). The lifting rod K has a hook is pivoted at its lowerend which falls below the pin 9 on the pawl G and when the lifting rodis raised the pawl G is lifted with it and the drawer G released.

The lifting rod M (see Fig. 22) has a hook m pivoted at its lower endand beside the rod M and hook m is placed a lever M which extends alongthe side of the machine to the resetting lever D on which a pawl mhangs. The pawl m engages a fixed or stationary rack M and forms a lockto hold the resetting lever D and the operating levers D by the bar D".On the transverse lever ill is a pin or projection m with which when thetilting lever U is raised the hook 212 engages and lifts the lever torelease the pawl m and resetting lever D The lifting mo 1? see Figs. 21and 22 is provided with a pin it which rests upon the lever M by whichit is lifted when the lifting rod N and lever M are raised. The top endof the lifting rod N engages a locking pawl 7t and the pawl It engages anotch (I in the top end of an upright arm of the lever D. The pawl 72also engages a notch in the top of the lever D (hereinafter described,see Fig. 23). The object of the locking pawl '11. is to relieve thestrain of the various springs and weights which would otherwise entirelyfall upon the pawl m and rack M and cause an undue strain upon the keysC, C. C C in operating the machine. The locking pawl 7?. falls into thenotches of the levers D and D when the re setting lever D has fullyreset all the levers D.

In addition to the keys C by which the counting or adding mechanism ofthe machine is operated at the side of the machine one two or more keysC, C, C are placed called initial keys which are employed to release thecash drawer G and other parts of the mechanism. The keys C C C which aretermed initial keys are marked with different distinguishing initialletters and are mounted on the rods E which carry the other keys C.

On the lifting rod K near the top one or more laterally projecting pins7c 71: a are fitted which rest on the initial keys C C C and above thepins 7a A? Zr slots .7 are cut through which project pins in. m and matiixed to the lifting rod M. The pins m m 112" rest upon the pins 7a itla and project forwa d and also rest upon the locking levers F.Therefore by depressing either of the initial keys C C C the lifting rodK is lifted, the pawl G raised and the drawer G thrown open. The samemovement of the initial key lifts the rod M and operates the lever M andthe raising of the lever M lifts the rod N and the pawl n and releasesthe levers D and D.

It will be evident that the depressing of the calculating keys C has noeffect on the lifting rod K inasmuch as the pins m m m move through theslots 7.2 therein. But if either initial key C C C be depressed thelifting rods K, M, or N are all lifted and so allow the mechanicaloperation of the machine to be performed. On the other hand should anyone of the calculating keys C be depressed then by means of the levers Fand the pins m m and m the lever M is lifted first taking the pawl m outof the rack M and then the pawl 11. out of engagement with the ends ofthe levers D and D thereby allowing the levers D to operate or moveforward against the shoulder 0 of the key C which may have beendepressed.

The resetting lever D is operated in one direction by the spring 6 andin the other direction by the lever g. Lever g is pivot ed to and moveswith the cash drawer G. On the closing of the drawer g the pivoted leverg comes into contact with the resetting lever D and operates same untilthe tail of the pivoted lever 9 comes into contact with a fixed stop 9This fixed stop 9 takes pivoted lever out of contact with resettinglever D It is necessary to disengage the pivoted lever g and thereby thecash drawer g from the resetting lever D in order to allow furtherdepression of keys and operatlon of the various mechanism. This furtherdepression of keys etc. takes place before the cash drawer is againopened and it will be apparent that if the resetting lever D were notdisengaged from the cash drawer g, the lever D would not be capable offurther movement as they would be held by resetting lever D This isaccomplished by the locking lever F (lifted by key C not freeing lever Duntil key C is fully depressed."

During the operation of closing the cash drawer G the lever g carriesthe resetting lever D slightly beyond the position shown in Fig. 2, andwhile so carried beyond the pawl 12 is permitted to fall into thenotches at the end of levers D and D and the pawl it takes all thestrain of the weights and springs attached to the levers D and D. Thepawl m on the resettinglever D is also carried beyond the rack M andtherefore has time to fall into position to engage with the first toothof the rack. The rack M has therefore only to sustain the pressure ofthe springs 6 and 7. The resetting lever D as described actuates theswinging frame 110 by means of lever H and link it. The resetting leverD being disengaged from the cash drawer g is held by the retaining pawlm and rack M. 4 So long as the retaining pawl m engages in rack M theswinging frame will be in its forward position (off crosshead pins 6).But on the resetting lever D being released from contact with rack M thespring 6 (Fig. 2) will carry the resetting lever to its up positiontaking with it the swing frame 110 and placing the counting plate A onto the crosshead pins 6. This action is performed by any key beingdepressed the lifting lever M so disengaging the pawl m from the pinionrack M Time is allowed for the operation of the spring 6 to place theswinging frame 110 on to the pins 6 of the crossheads B before any ofthe levers D start to move.

On the pivot of the hook is on the lifting rod K a hanging weightedlever L is pivoted (see Figs. 23, 25 and 26), which extends below thepawl G and against the hooks 7s and m. The object of the weighted leverL is to insure the disengaging of the hooks 7c and m, respectively fromthe pawl G and the lever M on the closing of the cash drawer Gr. As thedrawer opens the weighted lever L is drawn back into the position shownin Fig. 25 by contact with a block Z on the edge of the drawer. As thedrawer closes the block Z carries the lever L back in the reversedirection until it strikes the hooks 7c and m causing them to quicklydisengage from the pins on the pawl G and on the lever M permitting themquickly to resume their normal position.

A bell P is operated by a bell hammer 22 carried by a horizontallysliding rod P. The rod P is set to rest while in normal position withone end against the vertically lifting rod K so that when the verticalrod K is raised the horizontal rod P is free to slide forward under it.The rod at its other end is fitted with a projecting arm 7)2 which innormal position is behind the ends (Z of the levers D. It is moved inone direction by a spring 7 and is carried back in the oppositedirection by the resetting lever D by means of a pin 72 which engagestherewith. The horizontal rod P when in the position shown in Figs. 23and 24: allows the end of any of the levers D to be raised clear of thearm 79 hen however, the horizontal rod P is moved forward the arm ppasses over the tops of the ends (Z of the levers D and locks themthereby preventing either of them being operated during the time thedrawer G is open. This provides that any key or set of keys C that hasnot been operated before one of the initial keys C C or C and before thedrawer has been released and-opened thereby shall be inoperative or haveno effect 011 the lever D until the drawer G has again been fullyclosed.

Indicators B may be provided at the back of themachine to indicate .the.monetary values of the'keys G which have been depressed. The machineillustrated indicates a striking down capacity of 919.11} and thisamount or any less amount can be displayed by the indicators R. Theindlcators comprise three disks R inscribed with the numerals and twovertically sliding plates R and R the plate It for the tens of shil hugsand the plate R for halfpenny as there is only one numeral to bedisplayed. There is also a disk or quadrant 1& with initial letters A,B, O, corresponding with the initial letters on the initial keys O, O C.On the axle '1' of each disk R a pinion 1 is mounted with which gears avertically sliding rack r Each rack r carries a laterally projecting arm9", above each end d of the levers D a vertically sliding plate 9* isplaced upon which the free end of the arm 1* rests. On the operation ofeither lever D the end d is elevated and the plate i raised acorresponding distance and with it the arm r and rack 1'- therebyrotating the disk R a corresponding extent and displaying a numeralthrough a slot corresponding with the value of the key O which has beenstruck. The vertically sliding plate It repiesenting tens of shillingsis connected by an arm 1 with a vertically sliding plate r and is raisedthe desired distance by it. And the vertically sliding plate Rrepresenting a half-penny is connected by the arm 9 with the plate 2'and is raised the desired distance by it. The quadrant is also providedwith a pinion and is connected with a vertically sliding plate r" by aquadrant arm 1' The plate 1 is raised by the end of lever D connectedwith and operated by one of the initial keys C O or C", (see Figs. to13). The disks R are provided with numerals back and front so as toexpose and display the same numbers both to the back and front of themachine.

Each of the plates 1*" r 'r and r are provided with a number of holesand in front of them is a swinging bar S with a number of pins 5- whichenter the holes in the plates to lock the plates and the indicators R inany desired position. The swinging bar S moves horizontally, is pivotedat one end and at the other engages a second swinging lever S by whichit is moved to and from the plates '1 7' r and 2". The second swinginglever S connects at itslower end with the resetting lever D by means ofa pin 8.

The indicators R are held in the position to display the figures by theends cl of levers D so'long as the levers D remain depressed. As soon asthe resetting lever D is moved by the closing action of the drawer G toreset the levers D it also moves the two swinging levers S and Sandbrings the pins-s into the holes of the indicator plates r 7' r andlocks them thereby holding the indicators emcee exposed .until .theresetting .l ever.D is released'by the lifting of the lever M and pawl mfrom the locking rack M On this movement of the resetting lever D theplates and indicators R return to zero or fall onto the end of thelevers D.

For the purpose of printing and record ing every transaction of themachine as operated by the keys (l each lever D is provided with aquadrant upon which mounted a type block T carrying numerals corresponding to the numerals on the keys C. Above the type block T a pressure padT is placed carried on a pivoted arm or lever T so that it may be rockeddown upon the type block. The pressure pad T always moves in the samepath or plane and consequently will when depressed strike whichevernumeral presented to it according to the position of the type block T onthe lever D.

Around the pressure pad T is carried a ribbon of paper t which travelsforward at each operation of the machine from the roller 6 to the rollert Between the pressure pad T and the type block T a ribbon U saturatedwith printing ink or coated with carbon is caused to travel by which theimpress of the numerals on the printing block T is imparted to the paper6. The depression of any key C carries the type block T into such aposition that the corresponding numeral thereon is presented beneath thepressure pad T. The rocking lever T which operates the pressure pad isrock-e l by a pin i on the end of the resetting lever D striking a tripcam 1 thereon. The trip cam t is capable of adjustment to regulate theamount of pressure applied by the pres sure pad to the printing paper.In its upward movement the resetting lover I) has no effect on theprinting lever T by reason of the trip cam Z but as the lever D"descends when the drawer G is closing the pin 6* engages the trip cam Zand rocks the lever T thereby causing the pressure pad T to strike thetype block T. The resetting lever acts upon the rocking lever T andallows it to return to normal position before acting upon or resettingany of the levers D. That is to say, the impression of the type has beentaken and the pressure pad carried away from the type before the typeshall have been disturbed. The paper winding roller t is operated by apawl i connected to the swinging frame 110 which engages a ratchet wheel6 on the spindle of the roller. The pawl 25 is mounted upon a slidingbar i and the sliding bar is moved backward and forward by the frame 110engaging two projecting pins thereon 25 The paper winding roller 25 isthus fed on the distance of one tooth of the ratchet wheel every timethe drawer is closed.

The printing ribbon U is carried over a roller U at one side of themachine and over a pin a at the other side being arranged in an endlessband and placed transversely of the paper ribbon t see Figs. 9 and 21. Aratchet wheel a is placed on the shaft of the feed roller U with a pawl14 pivoted on a sliding plate a by which it is actuated. A bell cranklever U is pivoted between the sliding plate a and the swinging frame110 one arm of the lever engaging the plate and the other end the frame110. Thus as the frame 110 moves to and fro the bell crank lever U isrocked and the pawl a causes the feed roller U to rotate and moveforward the printing ribbon U on the forward movement of the frame 110when the cash drawer G is closed. The feed roller U is mounted upon anadjustable frame a which can be moved around a pin a secured by a bolt1& in a radial slot to present a. fresh track of the ribbon U over thetype block T. Or it may be adjusted longitudinally and secured by boltsa to tighten the printing ribbon. The lever D also carries a type blockT with letters corresponding to the initial letters on the initial keysC C C and when one key is depressed the lever is released by the liftingof the pawl m and falls forward to bring the corresponding letter underthe pressure pad T. The distance it falls is regulated by the length ofthe slots 0 which engage the pins 0 on the ends of the keys. Slots (2 inthe lever also engage the pins 0 when the lever D has moved forward andlock the keys and thereby prevent more than one key being depressed. Thelever D is moved in one direction by the spring 0 and in the oppositedirection by the resetting lever D \Vhat we claim as our invention anddesire to protect by Letters Patent is 2- 1. In calculating apparatusthe combination with the operating keys C, of rocking levers Doscillated when a key is struck, crossheads B raised by the levers, thecalculating plates A A operated by the cross heads B, and means forlocking the keys substantially as described.

2. In calculating apparatus the combination with the operating keys C,of rocking levers D oscillated when a key is struck, crossheads B raisedby the levers, the calculating plates A A operated by the crossheads B,and locking levers F pivoted at the sides of the keys provided with,cross rails 0 which rest upon the top of the keys and lock themsubstantially as described.

3. In calculating apparatus the combination with the operating keysC,.of rocking levers D oscillated when a key is struck, crossheads Braised by the levers, the calculating plates A A operated by thecrossheads B, a cash drawer G, means for releasing the drawer, and aresetting lever D which brings all the levers D resting upon the leversD back to zero, substantially as described.

4:. In calculating apparatus the combina tion with the operating keys C,of rocking levers D oscillated when a key, is struck, crossheads Braised by the levers, the calculating plates A A operated by thecrossheads B, a cash drawer G, a pawl G to hold the drawer, a rod K,capable of being raised a hook is pivoted near its lower end, and meansfor raising the rod K substantially as described.

5. In calculating apparatus the combination with the operating keys C,of rocking levers D oscillated when a key is struck, crossheads B raisedby the levers, the calculating plates A A operated by the crossheads B,a cash drawer G placed below the rocking levers D means for holding andreleasing the drawer, and the rod M placed at one side of the keyscapable of being lifted, means for raising the rod, a hook on pivotedthereto, a lever M with which the hook engages, extending along the sideof the machine, a resetting lever D a pawl m pivoted thereto anddepending therefrom, and a fixed rack M with which the pawl engagessubstantially as described.

6. In calculating apparatus the combination with the operating keys C,of rocking levers D oscillated when a key is struck, crossheads B raisedby the levers, the calculating plates A A operated by the crossheads B,a cash drawer G, means for holding and releasing the drawer, a rod N,capable of being raised, means for raising the rod, a pin a thereon, atransverse lever M upon which the pin a rests, and a locking pawl a"engaging a notch in the arm of the rocking lever D substantially asdescribed.

7. In calculating apparatus the combination with the operating keys C,of rocking levers D oscillated when a key is struck, crossheads B raisedby the levers, the calculating plates A A operated by the crossheads B,a cash drawer G, means for holding the drawer, initial keys C C liftingrods connected "therewith to release the drawer, lateral projections in70 70 fitted to the rod K to rest upon the initial keys, pins m m m onthe rod M which project through the slots, 76 in the rod K, and thelocking lever F which is raised thereby when one initial key is strucksubstantially as described.

8. In calculating apparatus the combination with the operating keys C,of rocking levers D oscillated when a key is struck, crossheads B raisedby the levers, the calculating plates A A operated by the crossheads B,a cash drawer G, the initial keys 0 C C means for retaining, releasingand opening the drawer, the disk indicators R, pinions r on axles of thedisks, vertical sliding racks r gearing with the pinions,

arms attached totheracks, and vertically sliding plates attached theretoplaced over dicators R are operated.

In calculating apparatus the combination with the operating keys C, ofrocking levers D oscillated when a key is struck, crossheads B raised bythe levers, the calculating plates A A operated by the crossheads B, acash drawer G, means for retaining, releasing and opening the drawer,means for displaying the monetary values of the keys, a type block T onthe lever D, a pressure pad T, a rocking lever T 3 carrying the pressurepad, and means for operating the lever T substantially as described.

10. In calculating apparatus the combination with the operating keys C,of rocking levers D oscillated when a key is struck, crossheads B raisedby the levers, the calculating plates A A operated by the crossheads B,a cash drawer G, means for retaining, releasing and opening the drawer,means for displaying the monetary values of the keys, a type block T onthe lever D, a pres sure pad T, a rocking lever T carrying the pressurepad, a pin t* on the rocking lever D and a trip cam t on the leversubstantially as described.

11. In calculating apparatus the combination with the operating keys C,of rocking levers D oscillated when a key is struck, crossheads B raisedby the levers, the calculating plates A A operated by the crossheads B,a cash drawer G, means for retaining, releasing and opening the drawer,and

meansfor displaying the monetary values of ev s-pea for displayingthe-monetary values of the keys, a type block T on the lever D,a'presthe ends cl of the levers D by which the inf pressure pad, therollers t and t upon which sure pad T, a rocking lever T carrying thethe paper is wound, a ratchet wheel 25 a' pawl 25 to engage the ratchetwheel, and a sliding bar i to which the pawl is pivoted substantially asdescribed.

18. In calculating apparatus the combination with the operating keys C,of rocking levers D, oscillated when a key is struck, crossheads Braised by the levers, the calculating plates A i-i operated by thecrossheads B, a cash drawer G, means for retaining releasing and openingthe drawer, means for displaying the monetary values of the keys, a typeblock T on the lever D, a pressure pad T, a rocking lever T carrying thepressure pad, means for carrying a ribbon of paper L to receive therecord, a saturated rib bon U to supply the printing medium, and meansfor traversing the ribbon U substantially as described.

14. In calculating apparatus the combination with the operating keys C,of rocking levers D oscillated when a key is struck, crossheads l3raised by the levers, the calculating plates A A operated by thecrossheads B, a cash drawer G, means for retaining releasing and openingthe drawer, means for displaying the monetary values of the keys, a typeblock T on the lever D, a pressure pad T, a rocking lever T carrying thepressure pad, means for carrying a ribbon of paper t to receive therecord, a saturated rib bon U to supply the printing medium, a feedroller U and pin a over which the ribbon U is extended, a ratchet wheel1! on the feed roller, a pawl u engaging the ratchet, a sliding plate aupon which the pawl is pivoted, and means for reciprocating the platesubstantially as described.

In witness whereof, we have hereunto signed our names in the presence oftwo subscribing witnesses.

BENJAMIN THOMPSON OBRIEN. WALTER HENRY BROWNING. Vitnesses Tiros. OBnmx,EDITH M. SIMS.

